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White Sweet Potato as Meal Replacement for Overweight White-Collar Workers: A Randomized Controlled Trial

1
School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, 250 Wu-Hsing Street, Taipei 11031, Taiwan
2
Department of Food Science, Nutrition, and Nutraceutical Biotechnology, Shih Chien University, No. 70, Dazhi St., Zhongshan Dist, Taipei 10462, Taiwan
3
Chinese Taipei Society for the Study of Obesity, 250 Wu-Hsing Street, Taipei 11031, Taiwan
4
Department of Food Science, Tunghai University, No. 1727, Sec. 4, Taiwan Boulevard, Taichung 40704, Taiwan
*
Author to whom correspondence should be addressed.
Nutrients 2019, 11(1), 165; https://doi.org/10.3390/nu11010165
Received: 1 December 2018 / Revised: 2 January 2019 / Accepted: 11 January 2019 / Published: 14 January 2019
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Abstract

Overweight and obesity are a global concern. Meal replacements (MRs) are portion- and calorie-controlled meals, which make the food environment part of an individual’s weight loss regimen. White sweet potato (WSP; Ipomoea batatas L.), used in traditional medicine in Brazil, Japan, and Taiwan, is a healthy carbohydrate source. In this randomized controlled trial, we assessed the effects of a WSP formula on body weight management in 58 white-collar workers through MR to elucidate the effects of this WSP-MR on factors leading to overweight. The participants consumed either two packs a day for a total of 132 g of WSP (WSP-MR group) or a normal diet daily (non-WSP group) for eight weeks. After eight weeks, body weight, body fat, body mass index, wrist circumference, thigh circumference, calf circumference, mid-arm circumference, and triceps skinfolds decreased significantly in both the groups. Moreover, the WSP-MR group demonstrated a 5% decrease in body weight, body fat, body mass index, and mid-arm circumference and a 3.5% decrease in glycated hemoglobin levels (p < 0.05). The treatment was well tolerated, without side effects or adverse events. Thus, our WSP formula as an MR can facilitate individual weight loss and thus has commercial application in the food industry. View Full-Text
Keywords: white sweet potato; meal replacement; overweight; glycated hemoglobin white sweet potato; meal replacement; overweight; glycated hemoglobin
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Shih, C.-K.; Chen, C.-M.; Hsiao, T.-J.; Liu, C.-W.; Li, S.-C. White Sweet Potato as Meal Replacement for Overweight White-Collar Workers: A Randomized Controlled Trial. Nutrients 2019, 11, 165.

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